coolsmartphone: Samsung Star Deluxe Duos (GT-S) Even though galaxy series phones had given much success, the tech giant has. well i think Samsung Rex 90 phones are budget phones with Java software, in order to install android hardware requirements are necessary?. Samsung Rex 90 S phone. Announced Feb Features ″ TFT display, MP primary camera, mAh battery, 10 MB storage. Samsung Rex 90 Duos (GT-S) secret codes to access the hidden features of the phone. Use this to Show Software Version (instructions) of your handset.